What was found
FLT 482 - PPT - LEFT EMERGENCY AC BUS OFF LIGHT ILLUMINATED. FOLLOWING CHECKS AND FOUND CIRCUIT BREAKER B-20 (TR 1 INPUT) POPPED. RESET, SYSTEM RETURNED TO NORMAL AT TIME OF FAILURE ST. ELMO'S FIRE WAS OBSERVED. AFTER THE ABOVE EVENT, THE FLAP LIMIT CHANNEL INOP LIGHT ILLUMINATED AND REMAINED ILLUMINATED. SYSTEM TEST OF LEFT EMERGENCY AC BUS, CHECKED OK. OK FOR SERVICE. RESET NR 1 AND NR 2 FLAP LIMIT AND ELEVATOR LOAD FEEL CIRCUIT BREAKER, OPS CHECK OK. RESET NR 1 AND NR 2 ELEVATOR LOAD FEEL AND FLAP CIRCUIT BREAKER, OPERATIONAL CHECK OK. (M)